A UAV-based moving 5G RAN for massive connectivity of mobile users and IoT devices - Nomikos, Nikolaos; Emmanouel T. Michailidis; Trakadas, Panagiotis; Vouyioukas, Demosthenes; Holger Karl; Martrat, Josep; Zahariadis, Theodore; PAPADOPOULOS, KONSTANTINOS; Stamatis Voliotis (Vehicular Communications, 2020)